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331 lines
10 KiB
331 lines
10 KiB
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "muxer"
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#include <inttypes.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <utils/Log.h>
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#include <binder/ProcessState.h>
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#include <media/IMediaHTTPService.h>
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#include <media/stagefright/foundation/ABuffer.h>
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#include <media/stagefright/foundation/ADebug.h>
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#include <media/stagefright/foundation/ALooper.h>
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#include <media/stagefright/foundation/AMessage.h>
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#include <media/stagefright/foundation/AString.h>
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#include <media/stagefright/MediaCodec.h>
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#include <media/stagefright/MediaDefs.h>
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#include <media/stagefright/MediaMuxer.h>
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#include <media/stagefright/MetaData.h>
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#include <media/stagefright/NuMediaExtractor.h>
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static void usage(const char *me) {
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fprintf(stderr, "usage: %s [-a] [-v] [-s <trim start time>]"
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" [-e <trim end time>] [-o <output file>]"
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" <input video file>\n", me);
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fprintf(stderr, " -h help\n");
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fprintf(stderr, " -a use audio\n");
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fprintf(stderr, " -v use video\n");
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fprintf(stderr, " -w mux into WebM container (default is MP4)\n");
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fprintf(stderr, " -s Time in milli-seconds when the trim should start\n");
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fprintf(stderr, " -e Time in milli-seconds when the trim should end\n");
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fprintf(stderr, " -o output file name. Default is /sdcard/muxeroutput.mp4\n");
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exit(1);
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}
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using namespace android;
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static int muxing(
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const char *path,
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bool useAudio,
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bool useVideo,
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const char *outputFileName,
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bool enableTrim,
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int trimStartTimeMs,
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int trimEndTimeMs,
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int rotationDegrees,
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MediaMuxer::OutputFormat container = MediaMuxer::OUTPUT_FORMAT_MPEG_4) {
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sp<NuMediaExtractor> extractor = new NuMediaExtractor;
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if (extractor->setDataSource(NULL /* httpService */, path) != OK) {
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fprintf(stderr, "unable to instantiate extractor. %s\n", path);
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return 1;
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}
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if (outputFileName == NULL) {
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outputFileName = "/sdcard/muxeroutput.mp4";
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}
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ALOGV("input file %s, output file %s", path, outputFileName);
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ALOGV("useAudio %d, useVideo %d", useAudio, useVideo);
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int fd = open(outputFileName, O_CREAT | O_LARGEFILE | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
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if (fd < 0) {
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ALOGE("couldn't open file");
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return fd;
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}
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sp<MediaMuxer> muxer = new MediaMuxer(fd, container);
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close(fd);
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size_t trackCount = extractor->countTracks();
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// Map the extractor's track index to the muxer's track index.
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KeyedVector<size_t, ssize_t> trackIndexMap;
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size_t bufferSize = 1 * 1024 * 1024; // default buffer size is 1MB.
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bool haveAudio = false;
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bool haveVideo = false;
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int64_t trimStartTimeUs = trimStartTimeMs * 1000;
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int64_t trimEndTimeUs = trimEndTimeMs * 1000;
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bool trimStarted = false;
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int64_t trimOffsetTimeUs = 0;
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for (size_t i = 0; i < trackCount; ++i) {
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sp<AMessage> format;
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status_t err = extractor->getTrackFormat(i, &format);
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CHECK_EQ(err, (status_t)OK);
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ALOGV("extractor getTrackFormat: %s", format->debugString().c_str());
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AString mime;
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CHECK(format->findString("mime", &mime));
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bool isAudio = !strncasecmp(mime.c_str(), "audio/", 6);
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bool isVideo = !strncasecmp(mime.c_str(), "video/", 6);
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if (useAudio && !haveAudio && isAudio) {
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haveAudio = true;
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} else if (useVideo && !haveVideo && isVideo) {
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haveVideo = true;
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} else {
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continue;
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}
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if (isVideo) {
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int width , height;
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CHECK(format->findInt32("width", &width));
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CHECK(format->findInt32("height", &height));
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bufferSize = width * height * 4; // Assuming it is maximally 4BPP
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}
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int64_t duration;
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CHECK(format->findInt64("durationUs", &duration));
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// Since we got the duration now, correct the start time.
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if (enableTrim) {
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if (trimStartTimeUs > duration) {
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fprintf(stderr, "Warning: trimStartTimeUs > duration,"
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" reset to 0\n");
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trimStartTimeUs = 0;
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}
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}
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ALOGV("selecting track %zu", i);
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err = extractor->selectTrack(i);
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CHECK_EQ(err, (status_t)OK);
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ssize_t newTrackIndex = muxer->addTrack(format);
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if (newTrackIndex < 0) {
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fprintf(stderr, "%s track (%zu) unsupported by muxer\n",
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isAudio ? "audio" : "video",
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i);
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} else {
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trackIndexMap.add(i, newTrackIndex);
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}
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}
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int64_t muxerStartTimeUs = ALooper::GetNowUs();
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bool sawInputEOS = false;
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size_t trackIndex = -1;
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sp<ABuffer> newBuffer = new ABuffer(bufferSize);
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muxer->setOrientationHint(rotationDegrees);
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muxer->start();
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while (!sawInputEOS) {
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status_t err = extractor->getSampleTrackIndex(&trackIndex);
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if (err != OK) {
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ALOGV("saw input eos, err %d", err);
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sawInputEOS = true;
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break;
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} else if (trackIndexMap.indexOfKey(trackIndex) < 0) {
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// ALOGV("skipping input from unsupported track %zu", trackIndex);
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extractor->advance();
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continue;
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} else {
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// ALOGV("reading sample from track index %zu\n", trackIndex);
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err = extractor->readSampleData(newBuffer);
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CHECK_EQ(err, (status_t)OK);
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int64_t timeUs;
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err = extractor->getSampleTime(&timeUs);
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CHECK_EQ(err, (status_t)OK);
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sp<MetaData> meta;
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err = extractor->getSampleMeta(&meta);
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CHECK_EQ(err, (status_t)OK);
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uint32_t sampleFlags = 0;
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int32_t val;
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if (meta->findInt32(kKeyIsSyncFrame, &val) && val != 0) {
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// We only support BUFFER_FLAG_SYNCFRAME in the flag for now.
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sampleFlags |= MediaCodec::BUFFER_FLAG_SYNCFRAME;
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// We turn on trimming at the sync frame.
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if (enableTrim && timeUs > trimStartTimeUs &&
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timeUs <= trimEndTimeUs) {
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if (trimStarted == false) {
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trimOffsetTimeUs = timeUs;
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}
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trimStarted = true;
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}
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}
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// Trim can end at any non-sync frame.
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if (enableTrim && timeUs > trimEndTimeUs) {
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trimStarted = false;
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}
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if (!enableTrim || (enableTrim && trimStarted)) {
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err = muxer->writeSampleData(newBuffer,
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trackIndexMap.valueFor(trackIndex),
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timeUs - trimOffsetTimeUs, sampleFlags);
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}
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extractor->advance();
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}
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}
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muxer->stop();
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newBuffer.clear();
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trackIndexMap.clear();
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int64_t elapsedTimeUs = ALooper::GetNowUs() - muxerStartTimeUs;
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fprintf(stderr, "SUCCESS: muxer generate the video in %" PRId64 " ms\n",
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elapsedTimeUs / 1000);
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return 0;
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}
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int main(int argc, char **argv) {
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const char *me = argv[0];
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bool useAudio = false;
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bool useVideo = false;
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char *outputFileName = NULL;
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int trimStartTimeMs = -1;
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int trimEndTimeMs = -1;
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int rotationDegrees = 0;
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// When trimStartTimeMs and trimEndTimeMs seems valid, we turn this switch
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// to true.
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bool enableTrim = false;
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MediaMuxer::OutputFormat container = MediaMuxer::OUTPUT_FORMAT_MPEG_4;
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int res;
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while ((res = getopt(argc, argv, "h?avo:s:e:r:w")) >= 0) {
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switch (res) {
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case 'a':
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{
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useAudio = true;
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break;
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}
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case 'v':
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{
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useVideo = true;
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break;
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}
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case 'w':
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{
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container = MediaMuxer::OUTPUT_FORMAT_WEBM;
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break;
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}
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case 'o':
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{
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outputFileName = optarg;
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break;
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}
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case 's':
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{
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trimStartTimeMs = atoi(optarg);
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break;
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}
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case 'e':
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{
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trimEndTimeMs = atoi(optarg);
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break;
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}
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case 'r':
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{
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rotationDegrees = atoi(optarg);
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break;
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}
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case '?':
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case 'h':
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default:
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{
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usage(me);
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}
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 1) {
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usage(me);
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}
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if (trimStartTimeMs < 0 || trimEndTimeMs < 0) {
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// If no input on either 's' or 'e', or they are obviously wrong input,
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// then turn off trimming.
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ALOGV("Trimming is disabled, copying the whole length video.");
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enableTrim = false;
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} else if (trimStartTimeMs > trimEndTimeMs) {
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fprintf(stderr, "ERROR: start time is bigger\n");
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return 1;
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} else {
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enableTrim = true;
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}
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if (!useAudio && !useVideo) {
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fprintf(stderr, "ERROR: Missing both -a and -v, no track to mux then.\n");
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return 1;
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}
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ProcessState::self()->startThreadPool();
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sp<ALooper> looper = new ALooper;
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looper->start();
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int result = muxing(argv[0], useAudio, useVideo, outputFileName,
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enableTrim, trimStartTimeMs, trimEndTimeMs, rotationDegrees, container);
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looper->stop();
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return result;
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}
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